package com.goods.shop.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpRequest {
    private static Logger logger = LoggerFactory.getLogger(HttpRequest.class);
    /**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                logger.info(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            logger.error("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     * 
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     * @throws Exception 
     */
    public static String sendPost1(String url, String param ) throws Exception {
    	return sendPost(url,param,false,null,0);
    } 
    
    public static String sendPost(String url, String param,boolean isProxy,String proxyIp,int proxyIpPort) throws Exception
    {
//    	PrintWriter out = null;
    	OutputStreamWriter out = null; 
        BufferedReader in = null;
        InputStreamReader is = null;
        StringBuilder result = new StringBuilder();
        try {
            URL realUrl = new URL(url);
            
            HttpURLConnection conn=null;
            if(isProxy)	//使用代理
            {
            	@SuppressWarnings("static-access")
				Proxy proxy = new Proxy(Proxy.Type.DIRECT.HTTP,new InetSocketAddress(proxyIp, proxyIpPort));
                conn = (HttpURLConnection) realUrl.openConnection(proxy);
            }
            else
            {
            	conn = (HttpURLConnection) realUrl.openConnection();
            }
            
            // 设置通用的请求属性
            conn.setInstanceFollowRedirects(true);
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
            conn.setRequestProperty("contentType", "utf-8");
            conn.setRequestProperty("Accept-Charset", "utf-8");
//            conn.setConnectTimeout(5000);
            conn.setReadTimeout(20000);//TODO
            conn.setRequestMethod("POST");
            
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
//            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
//            out.print(param);
            out.write(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            is = new InputStreamReader(conn.getInputStream(),"utf-8");
            in = new BufferedReader(is);
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            logger.error("发送 POST 请求出现异常！"+e);
            throw new Exception(e);
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(in!=null){
                	in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
            try{
                if(is!=null){
                    is.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
            try{
                if (out!=null){
                	out.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result.toString();
    }
    
    public static String sendPostQmk(String url, String param,int timeout,String charset) throws Exception
    {
    	OutputStreamWriter out = null; 
        BufferedReader in = null;
        InputStreamReader is = null;
        StringBuilder result = new StringBuilder();
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn=null;
            conn = (HttpURLConnection) realUrl.openConnection();
            
            // 设置通用的请求属性
            conn.setInstanceFollowRedirects(true);
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("contentType", charset);
            conn.setRequestProperty("Accept-Charset", charset);
            conn.setReadTimeout(timeout);
            conn.setRequestMethod("POST");
            
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
//          out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
//          out.print(param);
            out.write(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            is = new InputStreamReader(conn.getInputStream(),"utf-8");
            in = new BufferedReader(is);
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            logger.error("发送 POST 请求出现异常！"+e);
            throw new Exception(e);
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
            try{
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
            try{
                if (is!=null){
                    is.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result.toString();
    }
}
